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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ART_SRC_OAT_RUNTIME_X86_CONTEXT_X86_H_
#define ART_SRC_OAT_RUNTIME_X86_CONTEXT_X86_H_
#include "constants_x86.h"
#include "oat/runtime/context.h"
namespace art {
namespace x86 {
class X86Context : public Context {
public:
X86Context() {
Reset();
}
virtual ~X86Context() {}
virtual void Reset();
virtual void FillCalleeSaves(const StackVisitor& fr);
virtual void SetSP(uintptr_t new_sp) {
SetGPR(ESP, new_sp);
}
virtual void SetPC(uintptr_t new_pc) {
eip_ = new_pc;
}
virtual uintptr_t GetGPR(uint32_t reg) {
CHECK_LT(reg, static_cast<uint32_t>(kNumberOfCpuRegisters));
return *gprs_[reg];
}
virtual void SetGPR(uint32_t reg, uintptr_t value);
virtual void SmashCallerSaves();
virtual void DoLongJump();
private:
// Pointers to register locations, floating point registers are all caller save. Values are
// initialized to NULL or the special registers below.
uintptr_t* gprs_[kNumberOfCpuRegisters];
// Hold values for esp and eip if they are not located within a stack frame. EIP is somewhat
// special in that it cannot be encoded normally as a register operand to an instruction (except
// in 64bit addressing modes).
uintptr_t esp_, eip_;
};
} // namespace x86
} // namespace art
#endif // ART_SRC_OAT_RUNTIME_X86_CONTEXT_X86_H_
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